Artificial limb.



A. K. PETRON,

ARTIFICIAL LlMB..

APPLICATION FILED OCT. 4, 1911.

l,299,5%., Patented Apr. 8,1919.

an we wfoz JECHIMI'OJV ANTHONY K. rn'rnon,

or AMSTERDAM, NEW YORK.

ARTIFICIAL LIMB.

- Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed October 4, 1917. Serial No. 194,691.

To all whom it may concern:

Be it known that I, ANTHONY K. 'PETRON, a citizen of-Russia, residing atAmsterdam,

in the county of Montgomery and State of New York, have invented certainnew and useful Improvements in Artificial Limbs, of which the followingis a specification.

This invention relates to certain new and useful improvements inartificial limbs.

The primary object of the invention is the provision of an artificiallimb in the form In the drawings forming a part of this application andin which like designating characters refer to corresponding partsthroughout the several views,

Figure 1 is a view of a portion of the frame-work for an artificial legwith parts shown in vertical section.

Fig. 2 is a longitudinal sectional view thereof.

Fig. 3 is'an elevatio'nal view of the completeartificial leg.

Fig. 4 is a detail sectional view of the upper portion thereof.

Fig. 5 is a transverse sectional View of the same.

Fig. 6 is a transverse sectional view taken through the ankle portionofthe limb illustrating the foot-frame.

Referring more in detail to the drawing, the limb construction comprisestheleg 10 broadly comprising a frame 11 having a foot portion 12 and athigh portion'13 while a rubber envelop or casing It is arranged aroundthe samehsuitably filled or packed with a metallic hair or fine coiledand tangled wire 15, a belt portion 16 being arranged for securing theleg to the human y y means of lacings 17 with whi h they ,belt isarranged,"

The leg-frame 11 has opposite upper leg members 18 hinged to oppositelower leg members 19 as at 20 and provided with a connecting spring 21arranged upon the pint'le 22 of the hinge whereby the upper and lowerleg portions are normally maintained outstretched while the lower leg 19may swing rearwardly only upon the upperleg 18. The foot 12 is hinged asat 23 to the bottom of the lower leg 19 and is provided with a pluralityof pivotal toes 2 1.

A cross-bar 25 is arranged between the upper leg members 18 While a coilspring 26 is arranged around the upper leg members 18 and securedthereto by side strips or braces 27,

it being understood that the envelop l4 surrounds the entire frame 11and the spring 26, and is stuffed with the filling 15 to a pointadjacent the cross-bar 25. It will also be understood that the spring 26is closely coiled to form a casing and in the formation of the upperportion, of the leg.

The closely coiling of the spring 26 gives a neat and natural appearanceand prevents collapsing when in use. The filling 15 is also arrangedwithin the upper por- I tion of the leg inwardly of the spring 26 andslightly thereabove adapted for the reception of the stump or portion ofthe human leg to which the artificial limb is to be connected, the saidbar 25 acting as a support for the stump if desired. It will beunderstood that the foot portion 28 ofthe leg isof the usual shape of astocking and incloses the toes 24 within the pointed end portion thereofwhile a pad 29' is preferably arranged beneath the heel of the foot atthe hinged portion 23 thereof extending forwardly beneath the foot asfar as the toes 24. With the leg 10 attached to the person in the mannerdescribed, the same will perform the functions of an artificial limb.

What I claim as new is 1. An artificial limb comprising a frame havingupper and lower portions, a spring hinge connection between the saidportions, an .encircling spring for the upper portion ofthe frame, anenvelop surrounding the frame provided with an attaching portion.

, 2. An artificial limb comprising a frame havin upper and lowerportionsincluding space parallel members, a spring hinge connection between thepairs of said members, a pivoted brace between the pairs of the uppermembers of the frame, an encircling spring for the upper portion of theframe and fastening strips secured exteriorly to the upper frame portionover said spring,

said encircling spring forming a support for the limb.

.3. An artificial leg comprising an upper and lower portion havingspaced side members, a spring hinge connecting the pairs of the upperand lower portions together,

a cross brace secured between the pairs of the upper frame portion, afooting member pivoted between the pairs of the lower frame 10 portion,an encircling spring secured exteriorly to and about the upper frameportion adjacent the connecting member, longitudinally arranged stripssecured to the sides of the upper frame portions and against saidsprings and an attaching means inclosing said frame, said encirclingspring forming a support for the attaching means and limb. a

In testimony whereof I afiix my signature.

ANTHONY K. PETRON.

